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(Breaking) Style: obsoleted style.CurveTessellationTol in favor of style.CurveTesselationMaxError.

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cc #3127, #3664, #3665
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ocornut
2026-08-03 16:45:56 +02:00
parent b647af2100
commit fdc1152281
6 changed files with 53 additions and 29 deletions
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35
imgui.cpp
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@@ -395,6 +395,8 @@ IMPLEMENTING SUPPORT for ImGuiBackendFlags_RendererHasTextures:
When you are not sure about an old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all imgui files.
You can read releases logs https://github.com/ocornut/imgui/releases for more details.
- 2026/08/03 (1.93.0) - Style: obsoleted `style.CurveTessellationTol (default 1.25)` which was in Pixels² unit in favor of `style.CurveTesselationMaxError` (default 1.12)` which is in Pixels unit.
- style.CurveTesselationMaxError == sqrf(style.CurveTessellationTol).
- 2026/07/20 (1.92.9) - DragXXX, SliderXXX, InputScalar: with `ImGuiItemFlags_LiveEditOnInputScalar` now defaulting to being disabled:
inputting a value with the keyboard doesn't write intermediate values to backing variable. (#9476)
- Before: DragFloat() with user typing "123" --> write back 1, then 12, then 123.
@@ -1570,10 +1572,12 @@ ImGuiStyle::ImGuiStyle()
DisplayWindowPadding = ImVec2(19,19); // Window position are clamped to be visible within the display area or monitors by at least this amount. Only applies to regular windows.
DisplaySafeAreaPadding = ImVec2(3,3); // If you cannot see the edge of your screen (e.g. on a TV) increase the safe area padding. Covers popups/tooltips as well regular windows.
MouseCursorScale = 1.0f; // Scale software rendered mouse cursor (when io.MouseDrawCursor is enabled). May be removed later.
// Rendering & Tesselation
AntiAliasedLines = true; // Enable anti-aliased lines/borders. Disable if you are really tight on CPU/GPU.
AntiAliasedLinesUseTex = true; // Enable anti-aliased lines/borders using textures where possible. Require backend to render with bilinear filtering (NOT point/nearest filtering).
AntiAliasedFill = true; // Enable anti-aliased filled shapes (rounded rectangles, circles, etc.).
CurveTessellationTol = 1.25f; // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
CurveTessellationMaxError = 1.12f; // Maximum error (in pixels) when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
CircleTessellationMaxError = 0.30f; // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
// Behaviors
@@ -1586,6 +1590,9 @@ ImGuiStyle::ImGuiStyle()
// [Internal]
_MainScale = 1.0f;
_NextFrameFontSizeBase = 0.0f;
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
CurveTessellationTol = 0.0f; // Old CurveTessellationTol = CurveTessellationMaxError*CurveTessellationMaxError.
#endif
// Default theme
ImGui::StyleColorsDark(this);
@@ -2100,7 +2107,7 @@ ImVec2 ImBezierCubicClosestPoint(const ImVec2& p1, const ImVec2& p2, const ImVec
}
// Closely mimics PathBezierToCasteljau() in imgui_draw.cpp
static void ImBezierCubicClosestPointCasteljauStep(const ImVec2& p, ImVec2& p_closest, ImVec2& p_last, float& p_closest_dist2, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)
static void ImBezierCubicClosestPointCasteljauStep(const ImVec2& p, ImVec2& p_closest, ImVec2& p_last, float& p_closest_dist2, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float max_error_sqr, int level)
{
float dx = x4 - x1;
float dy = y4 - y1;
@@ -2108,7 +2115,7 @@ static void ImBezierCubicClosestPointCasteljauStep(const ImVec2& p, ImVec2& p_cl
float d3 = ((x3 - x4) * dy - (y3 - y4) * dx);
d2 = (d2 >= 0) ? d2 : -d2;
d3 = (d3 >= 0) ? d3 : -d3;
if ((d2 + d3) * (d2 + d3) < tess_tol * (dx * dx + dy * dy))
if ((d2 + d3) * (d2 + d3) < max_error_sqr * (dx * dx + dy * dy))
{
ImVec2 p_current(x4, y4);
ImVec2 p_line = ImLineClosestPoint(p_last, p_current, p);
@@ -2128,20 +2135,21 @@ static void ImBezierCubicClosestPointCasteljauStep(const ImVec2& p, ImVec2& p_cl
float x123 = (x12 + x23)*0.5f, y123 = (y12 + y23)*0.5f;
float x234 = (x23 + x34)*0.5f, y234 = (y23 + y34)*0.5f;
float x1234 = (x123 + x234)*0.5f, y1234 = (y123 + y234)*0.5f;
ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, x1, y1, x12, y12, x123, y123, x1234, y1234, tess_tol, level + 1);
ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, x1234, y1234, x234, y234, x34, y34, x4, y4, tess_tol, level + 1);
ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, x1, y1, x12, y12, x123, y123, x1234, y1234, max_error_sqr, level + 1);
ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, x1234, y1234, x234, y234, x34, y34, x4, y4, max_error_sqr, level + 1);
}
}
// tess_tol is generally the same value you would find in ImGui::GetStyle().CurveTessellationTol
// tess_tol is generally the same value you would find in ImGui::GetStyle().CurveTessellationMaxError
// Because those ImXXX functions are lower-level than ImGui:: we cannot access this value automatically.
ImVec2 ImBezierCubicClosestPointCasteljau(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, float tess_tol)
ImVec2 ImBezierCubicClosestPointCasteljau(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& p, float max_error)
{
IM_ASSERT(tess_tol > 0.0f);
IM_ASSERT(max_error > 0.0f);
ImVec2 p_last = p1;
ImVec2 p_closest;
float p_closest_dist2 = FLT_MAX;
ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, tess_tol, 0);
float max_error_sqr = max_error * max_error;
ImBezierCubicClosestPointCasteljauStep(p, p_closest, p_last, p_closest_dist2, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, max_error_sqr, 0);
return p_closest;
}
@@ -5572,7 +5580,7 @@ static void SetupDrawListSharedData()
for (ImGuiViewportP* viewport : g.Viewports)
virtual_space.Add(viewport->GetMainRect());
g.DrawListSharedData.ClipRectFullscreen = virtual_space.ToVec4();
g.DrawListSharedData.CurveTessellationTol = g.Style.CurveTessellationTol;
g.DrawListSharedData.CurveTessellationMaxError = g.Style.CurveTessellationMaxError;
g.DrawListSharedData.SetCircleTessellationMaxError(g.Style.CircleTessellationMaxError);
g.DrawListSharedData.InitialFlags = ImDrawListFlags_None;
if (g.Style.AntiAliasedLines)
@@ -11098,7 +11106,7 @@ static void ImGui::ErrorCheckNewFrameSanityChecks()
IM_ASSERT((g.IO.DeltaTime > 0.0f || g.FrameCount == 0) && "Need a positive DeltaTime!");
IM_ASSERT((g.FrameCount == 0 || g.FrameCountEnded == g.FrameCount) && "Forgot to call Render() or EndFrame() at the end of the previous frame?");
IM_ASSERT(g.IO.DisplaySize.x >= 0.0f && g.IO.DisplaySize.y >= 0.0f && "Invalid DisplaySize value!");
IM_ASSERT(g.Style.CurveTessellationTol > 0.0f && "Invalid style setting!");
IM_ASSERT(g.Style.CurveTessellationMaxError > 0.0f && "Invalid style setting!");
IM_ASSERT(g.Style.CircleTessellationMaxError > 0.0f && "Invalid style setting!");
IM_ASSERT(g.Style.Alpha >= 0.0f && g.Style.Alpha <= 1.0f && "Invalid style setting!"); // Allows us to avoid a few clamps in color computations
IM_ASSERT(g.Style.WindowMinSize.x >= 1.0f && g.Style.WindowMinSize.y >= 1.0f && "Invalid style setting!");
@@ -11138,6 +11146,11 @@ static void ImGui::ErrorCheckNewFrameSanityChecks()
g.PlatformIO.Platform_GetClipboardTextFn = [](ImGuiContext* ctx) { return ctx->IO.GetClipboardTextFn(ctx->IO.ClipboardUserData); };
if (g.IO.SetClipboardTextFn != NULL && (g.PlatformIO.Platform_SetClipboardTextFn == NULL || g.PlatformIO.Platform_SetClipboardTextFn == Platform_SetClipboardTextFn_DefaultImpl))
g.PlatformIO.Platform_SetClipboardTextFn = [](ImGuiContext* ctx, const char* text) { return ctx->IO.SetClipboardTextFn(ctx->IO.ClipboardUserData, text); };
// Remap legacy CurveTessellationTol into CurveTessellationMaxError (OBSOLETED in 1.93.0, August 2026)
if (g.Style.CurveTessellationTol != 0.0f)
g.Style.CurveTessellationMaxError = ImSqrt(g.Style.CurveTessellationTol);
g.Style.CurveTessellationTol = 0.0f;
#endif
}